PNO-III-86-023, on 860308,licensee Noted Drywell Pressure Instrument Isolated by Mispositioned Valve on Sys Declared Operable for Fuel Load.Mispositioning May Have Occurred During Mod & Maint Activities.Corrective Program Initiated

PNO-III-86-023:on 860308,licensee Noted Drywell Pressure Instrument Isolated by Mispositioned Valve on Sys Declared Operable for Fuel Load.Mispositioning May Have Occurred During Mod & Maint Activities.Corrective Program Initiated

ML20140A678
Person / Time
Site:	Perry
Issue date:	03/14/1986
From:	Knop R, Warnick R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
To:
References
PNO-III-86-023, PNO-III-86-23, NUDOCS 8603210094
Download: ML20140A678 (1)

. - - . .

PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE--PNO-ITI-86-23 Date March 143 1986 This preliminary notification constitutes EARLY notice of events of POSSIBLE safety P or public interest significance. The information is as initially received without verification or evaluation, and is basically all 'that is kriown by the Region III staff on this date.

Facility

Cleveland Electric Illuminating Licensee Emargency Classification:

Perry Nuclear Plant Unit 1 Notification of an Unusual Event Perry, OH 44081 Alert 1 Site Area Emergency Docket No: 50-440 General Emergency ,

XX Not Applicable j 1

Subject:

MISPOSITIONED INSTRUMENT VALVES On March 8,1986, during an operational readiness inspection, the licensee identified a drywell pressure instrument that was isolated by a mispositioned valve on a system that had been declared operable for fuel load. Because of this finding, the licensee expanded its review to determine if the incident was a single event or more widespread. The review uncovered 57 instances of instrument valves or valve caps in the wrong position. Almost all the valves (vent, drain, rack isolation) were in systems not yet declared operable.

Normally, these valves are not manipulated during an instrument calibration. The i mispositioning may have occurred during modification and maintenance activities following

, preoperational testing.

-l The licensee has initiated an extensive program to correct the problem, including j verification of position, tagging and revision of procedures and drawings. In addition, the

licensee will determine if past surveillance tests or preoperaticnal tests could have been affected by the mispositioned valves. To date, no tests were found to be affected.

The resident inspectors are following the licensee's course of action.

The State of Ohio will be notified.

Region III (Chicago) was informed of the multiple valve errors on March 12, 1986. This information is current as of 10 a.m. (CST), March 14, 1986.

CONTACT:

Tbef R. Knop RRt R. Warn)ick FTS 388-5547 FTS 388-5575 i

I DISTRIBUTION:

i H. St. ED0 NRR E/W Willste Mail: ADM:DMB Chairman Palladino PA IE NMSS D0T:Trans only

Comm. Zech ELD OIA RES Comm. Bernthal AEOD Comm o Roberts Comm. Asselstine SP//'87) Regional Offices ACRS

! SECY INP0/IBS~ NSAC /[S)

CA RIII Resident Office

PDR Licensee: //,'/ ) (Corp. Office - Reactor Lic. Only)

TNny 8603210094 e60314 Region III PDR I&E Rev. November 1985 @Ig PNO-III-86-023 PDR A